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Analysis of Treponema pallidum Strains From China Using Improved Methods for Whole-Genome Sequencing From Primary Syphilis Chancres.


ABSTRACT:

Background

Whole-genome sequencing (WGS) of Treponema pallidum subspecies pallidum (TPA) has been constrained by the lack of in vitro cultivation methods for isolating spirochetes from patient samples.

Methods

We built upon recently developed enrichment methods to sequence TPA directly from primary syphilis chancre swabs collected in Guangzhou, China.

Results

By combining parallel, pooled whole-genome amplification with hybrid selection, we generated high-quality genomes from 4 of 8 chancre-swab samples and 2 of 2 rabbit-passaged isolates, all subjected to challenging storage conditions.

Conclusions

This approach enabled the first WGS of Chinese samples without rabbit passage and provided insights into TPA genetic diversity in China.

SUBMITTER: Chen W 

PROVIDER: S-EPMC8171795 | biostudies-literature |

REPOSITORIES: biostudies-literature

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